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LightningJit: Reduce stack usage for Arm32 code (#6245)

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* Write/read guest state to context for sync points, stop reserving stack for them

* Fix UsedGprsMask not being updated when allocating with preferencing

* POP should be also considered a return
This commit is contained in:
gdkchan
2024-02-08 16:17:47 -03:00
committed by GitHub
parent a0b3d82ee0
commit ea07328aea
7 changed files with 86 additions and 36 deletions
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16
src/Ryujinx.Cpu/LightningJit/Arm32/Decoder.cs
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@@ -208,6 +208,7 @@ namespace Ryujinx.Cpu.LightningJit.Arm32
InstMeta meta;
InstFlags extraFlags = InstFlags.None;
bool hasHostCall = false;
bool hasHostCallSkipContext = false;
bool isTruncated = false;
do
@@ -246,9 +247,17 @@ namespace Ryujinx.Cpu.LightningJit.Arm32
meta = InstTableA32<T>.GetMeta(encoding, cpuPreset.Version, cpuPreset.Features);
}
if (meta.Name.IsSystemOrCall() && !hasHostCall)
if (meta.Name.IsSystemOrCall())
{
hasHostCall = meta.Name.IsCall() || InstEmitSystem.NeedsCall(meta.Name);
if (!hasHostCall)
{
hasHostCall = InstEmitSystem.NeedsCall(meta.Name);
}
if (!hasHostCallSkipContext)
{
hasHostCallSkipContext = meta.Name.IsCall() || InstEmitSystem.NeedsCallSkipContext(meta.Name);
}
}
insts.Add(new(encoding, meta.Name, meta.EmitFunc, meta.Flags | extraFlags));
@@ -259,8 +268,8 @@ namespace Ryujinx.Cpu.LightningJit.Arm32
if (!isTruncated && IsBackwardsBranch(meta.Name, encoding))
{
hasHostCall = true;
isLoopEnd = true;
hasHostCallSkipContext = true;
}
return new(
@@ -269,6 +278,7 @@ namespace Ryujinx.Cpu.LightningJit.Arm32
insts,
!isTruncated,
hasHostCall,
hasHostCallSkipContext,
isTruncated,
isLoopEnd,
isThumb);